diff --git a/package.json b/package.json
index 918605c..6129dda 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "wms-core",
-  "version": "0.19.0",
+  "version": "0.19.1",
   "description": "Node web framework",
   "repository": "git@gitlab.com:ArisuOngaku/wms-core.git",
   "author": "Alice Gaudon <alice@gaudon.pro>",
diff --git a/src/Logger.ts b/src/Logger.ts
index 9c36575..325be1b 100644
--- a/src/Logger.ts
+++ b/src/Logger.ts
@@ -1,6 +1,8 @@
 import config from "config";
 import {v4 as uuid} from "uuid";
 import Log from "./models/Log";
+import ModelFactory from "./db/ModelFactory";
+import {bufferToUUID} from "./Utils";
 
 export default class Logger {
     private static logLevel: LogLevelKeys = <LogLevelKeys>config.get<string>('log_level');
@@ -71,19 +73,15 @@ export default class Logger {
                 }
             }).join(' ');
 
-            const log = new Log({});
-            log.setLevel(level);
-            log.message = computedMsg;
-            log.setError(error);
-
-            let logID = Buffer.alloc(16);
-            uuid({}, logID);
-            log.setLogID(logID);
-
+            const shouldSaveToDB = levelIndex <= LogLevel[this.dbLogLevel];
 
             let output = `[${level}] `;
-            let pad = output.length;
-            if (levelIndex <= LogLevel[this.dbLogLevel]) output += `${log.getLogID()} - `;
+            const pad = output.length;
+
+            const logID = Buffer.alloc(16);
+            uuid({}, logID);
+            if (shouldSaveToDB) output += `${logID} - `;
+
             output += computedMsg.replace(/\n/g, '\n' + ' '.repeat(pad));
 
             switch (level) {
@@ -106,14 +104,19 @@ export default class Logger {
                     break;
             }
 
-            if (levelIndex <= LogLevel[this.dbLogLevel]) {
+            if (shouldSaveToDB) {
+                const log = ModelFactory.get(Log).make({});
+                log.setLevel(level);
+                log.message = computedMsg;
+                log.setError(error);
+                log.setLogID(logID);
                 log.save().catch(err => {
                     if (!silent && err.message.indexOf('ECONNREFUSED') < 0) {
                         console.error({save_err: err, error});
                     }
                 });
             }
-            return log.getLogID();
+            return bufferToUUID(logID);
         }
         return null;
     }
diff --git a/src/Utils.ts b/src/Utils.ts
index 98ec04c..e91a5b8 100644
--- a/src/Utils.ts
+++ b/src/Utils.ts
@@ -35,3 +35,15 @@ export function cryptoRandomDictionary(size: number, dictionary: string): string
 }
 
 export type Type<T> = { new(...args: any[]): T };
+
+export function bufferToUUID(buffer: Buffer): string {
+    const chars = buffer.toString('hex');
+    let out = '';
+    let i = 0;
+    for (const l of [8, 4, 4, 4, 12]) {
+        if (i > 0) out += '-';
+        out += chars.substr(i, l);
+        i += l;
+    }
+    return out;
+}
diff --git a/src/auth/models/MagicLink.ts b/src/auth/models/MagicLink.ts
index 36c16b2..255cb1e 100644
--- a/src/auth/models/MagicLink.ts
+++ b/src/auth/models/MagicLink.ts
@@ -24,13 +24,14 @@ export default class MagicLink extends Model implements AuthProof {
         return config.get<number>('magic_link.validity_period') * 1000;
     }
 
-    private session_id?: string;
-    private email?: string;
-    private token?: string;
-    private action_type?: string;
-    private original_url?: string;
-    private generated_at?: Date;
-    private authorized?: boolean;
+    public readonly id?: number = undefined;
+    private session_id?: string = undefined;
+    private email?: string = undefined;
+    private token?: string = undefined;
+    private action_type?: string = undefined;
+    private original_url?: string = undefined;
+    private generated_at?: Date = undefined;
+    private authorized?: boolean = undefined;
 
     constructor(data: any) {
         super(data);
diff --git a/src/auth/models/User.ts b/src/auth/models/User.ts
index 01aef5b..dd67de5 100644
--- a/src/auth/models/User.ts
+++ b/src/auth/models/User.ts
@@ -12,10 +12,11 @@ export default class User extends Model {
         return config.get<boolean>('approval_mode') && MysqlConnectionManager.hasMigration(AddApprovedFieldToUsersTable);
     }
 
-    public name?: string;
-    public is_admin!: boolean;
-    public created_at?: Date;
-    public updated_at?: Date;
+    public readonly id?: number = undefined;
+    public name?: string = undefined;
+    public is_admin: boolean = false;
+    public created_at?: Date = undefined;
+    public updated_at?: Date = undefined;
 
     public readonly emails = new ManyModelRelation(this, ModelFactory.get(UserEmail), {
         localKey: 'id',
@@ -26,8 +27,6 @@ export default class User extends Model {
 
     public constructor(data: any) {
         super(data);
-        if (this.approved === undefined) this.approved = false;
-        if (this.is_admin === undefined) this.is_admin = false;
     }
 
     protected init(): void {
diff --git a/src/auth/models/UserApprovedComponent.ts b/src/auth/models/UserApprovedComponent.ts
index 93d2448..ab65006 100644
--- a/src/auth/models/UserApprovedComponent.ts
+++ b/src/auth/models/UserApprovedComponent.ts
@@ -2,5 +2,5 @@ import ModelComponent from "../../db/ModelComponent";
 import User from "./User";
 
 export default class UserApprovedComponent extends ModelComponent<User> {
-    public approved!: boolean;
+    public approved: boolean = false;
 }
\ No newline at end of file
diff --git a/src/auth/models/UserEmail.ts b/src/auth/models/UserEmail.ts
index 4295b4b..fe99ed9 100644
--- a/src/auth/models/UserEmail.ts
+++ b/src/auth/models/UserEmail.ts
@@ -6,10 +6,11 @@ import {OneModelRelation} from "../../db/ModelRelation";
 import ModelFactory from "../../db/ModelFactory";
 
 export default class UserEmail extends Model {
-    public user_id?: number;
-    public readonly email!: string;
-    private main!: boolean;
-    public created_at?: Date;
+    public readonly id?: number = undefined;
+    public user_id?: number = undefined;
+    public readonly email?: string = undefined;
+    private main?: boolean = undefined;
+    public created_at?: Date = undefined;
 
     public readonly user = new OneModelRelation<UserEmail, User>(this, ModelFactory.get(User), {
         localKey: 'user_id',
@@ -36,7 +37,7 @@ export default class UserEmail extends Model {
     }
 
     public isMain(): boolean {
-        return this.main;
+        return Boolean(this.main);
     }
 
     public setMain() {
diff --git a/src/db/Model.ts b/src/db/Model.ts
index 7d51481..23bc7b6 100644
--- a/src/db/Model.ts
+++ b/src/db/Model.ts
@@ -29,19 +29,16 @@ export default abstract class Model {
         return ModelFactory.get(this).paginate(request, perPage, query);
     }
 
-    protected readonly _factory!: ModelFactory<any>;
+    protected readonly _factory: ModelFactory<any>;
     private readonly _components: ModelComponent<any>[] = [];
     private readonly _validators: { [key: string]: Validator<any> } = {};
 
     [key: string]: any;
 
-    public constructor(data: any) {
+    public constructor(factory: ModelFactory<any>) {
+        if (!factory || !(factory instanceof ModelFactory)) throw new Error('Cannot instantiate model directly.');
+        this._factory = factory;
         this.init();
-        this.updateWithData(data);
-    }
-
-    public setFactory(factory: ModelFactory<any>) {
-        (this as any)._factory = factory;
     }
 
     protected abstract init(): void;
@@ -66,7 +63,7 @@ export default abstract class Model {
         throw new Error(`Component ${type.name} was not initialized for this ${this.constructor.name}.`);
     }
 
-    private updateWithData(data: any) {
+    public updateWithData(data: any) {
         for (const property of this._properties) {
             if (data[property] !== undefined) {
                 this[property] = data[property];
@@ -128,7 +125,7 @@ export default abstract class Model {
                 }
             }
             let query = this._factory.update(data);
-            for (const indexField of this.getPrimaryKeyFields()) {
+            for (const indexField of this._factory.getPrimaryKeyFields()) {
                 query = query.where(indexField, this[indexField]);
             }
             await query.execute(connection);
@@ -154,7 +151,7 @@ export default abstract class Model {
 
     public async exists(): Promise<boolean> {
         let query = this._factory.select('1');
-        for (const indexField of this.getPrimaryKeyFields()) {
+        for (const indexField of this._factory.getPrimaryKeyFields()) {
             query = query.where(indexField, this[indexField]);
         }
         return (await query.limit(1).execute()).results.length > 0;
@@ -164,7 +161,7 @@ export default abstract class Model {
         if (!(await this.exists())) throw new Error('This model instance doesn\'t exist in DB.');
 
         let query = this._factory.delete();
-        for (const indexField of this.getPrimaryKeyFields()) {
+        for (const indexField of this._factory.getPrimaryKeyFields()) {
             query = query.where(indexField, this[indexField]);
         }
         await query.execute();
diff --git a/src/db/ModelFactory.ts b/src/db/ModelFactory.ts
index 1078931..a47f9c9 100644
--- a/src/db/ModelFactory.ts
+++ b/src/db/ModelFactory.ts
@@ -25,22 +25,21 @@ export default class ModelFactory<T extends Model> {
         this.modelType = modelType;
     }
 
-
     public addComponent(modelComponentFactory: ModelComponentFactory<T>) {
         this.components.push(modelComponentFactory);
     }
 
     public make(data: any): T {
-        const model = new this.modelType(data);
+        const model = new this.modelType(this, data);
         for (const component of this.components) {
             model.addComponent(new component(model));
         }
-        model.setFactory(this);
+        model.updateWithData(data);
         return model;
     }
 
     public get table(): string {
-        return this.constructor.name
+        return this.modelType.name
                 .replace(/(?:^|\.?)([A-Z])/g, (x, y) => '_' + y.toLowerCase())
                 .replace(/^_/, '')
             + 's';
diff --git a/src/models/Log.ts b/src/models/Log.ts
index e4a38d4..b922cbe 100644
--- a/src/models/Log.ts
+++ b/src/models/Log.ts
@@ -1,14 +1,16 @@
 import Model from "../db/Model";
 import {LogLevel, LogLevelKeys} from "../Logger";
+import {bufferToUUID} from "../Utils";
 
 export default class Log extends Model {
-    private level?: number;
-    public message?: string;
-    private log_id?: Buffer;
-    private error_name?: string;
-    private error_message?: string;
-    private error_stack?: string;
-    private created_at?: Date;
+    public readonly id?: number = undefined;
+    private level?: number = undefined;
+    public message?: string = undefined;
+    private log_id?: Buffer = undefined;
+    private error_name?: string = undefined;
+    private error_message?: string = undefined;
+    private error_stack?: string = undefined;
+    private created_at?: Date = undefined;
 
     protected init(): void {
         this.setValidation('level').defined();
@@ -29,16 +31,7 @@ export default class Log extends Model {
     }
 
     public getLogID(): string | null {
-        if (!this.log_id) return null;
-        const chars = this.log_id!.toString('hex');
-        let out = '';
-        let i = 0;
-        for (const l of [8, 4, 4, 4, 12]) {
-            if (i > 0) out += '-';
-            out += chars.substr(i, l);
-            i += l;
-        }
-        return out;
+        return this.log_id ? bufferToUUID(this.log_id!) : null;
     }
 
     public setLogID(buffer: Buffer) {
diff --git a/test/Model.test.ts b/test/Model.test.ts
index 7ba3222..e4896c3 100644
--- a/test/Model.test.ts
+++ b/test/Model.test.ts
@@ -1,22 +1,22 @@
 import MysqlConnectionManager from "../src/db/MysqlConnectionManager";
 import Model from "../src/db/Model";
-import Validator from "../src/db/Validator";
 import {MIGRATIONS} from "./_migrations";
+import ModelFactory from "../src/db/ModelFactory";
 
 class FakeDummyModel extends Model {
-    public name?: string;
-    public date?: Date;
-    public date_default?: Date;
+    public id?: number = undefined;
+    public name?: string = undefined;
+    public date?: Date = undefined;
+    public date_default?: Date = undefined;
 
     protected init(): void {
-        this.addProperty<string>('name', new Validator().acceptUndefined().between(3, 256));
-        this.addProperty<Date>('date', new Validator());
-        this.addProperty<Date>('date_default', new Validator());
+        this.setValidation('name').acceptUndefined().between(3, 256);
     }
 }
 
 beforeAll(async (done) => {
     MysqlConnectionManager.registerMigrations(MIGRATIONS);
+    ModelFactory.register(FakeDummyModel);
     await MysqlConnectionManager.prepare();
     done();
 });
@@ -28,13 +28,15 @@ afterAll(async (done) => {
 
 describe('Model', () => {
     it('should have a proper table name', async () => {
-        expect(FakeDummyModel.table).toBe('fake_dummy_models');
-        expect(new FakeDummyModel({}).table).toBe('fake_dummy_models');
+        const factory = ModelFactory.get(FakeDummyModel);
+        expect(factory.table).toBe('fake_dummy_models');
+        expect(factory.make({}).table).toBe('fake_dummy_models');
     });
 
     it('should insert and retrieve properly', async () => {
-        await MysqlConnectionManager.query(`DROP TABLE IF EXISTS ${FakeDummyModel.table}`);
-        await MysqlConnectionManager.query(`CREATE TABLE ${FakeDummyModel.table}(
+        const factory = ModelFactory.get(FakeDummyModel);
+        await MysqlConnectionManager.query(`DROP TABLE IF EXISTS ${(factory.table)}`);
+        await MysqlConnectionManager.query(`CREATE TABLE ${(factory.table)}(
             id INT NOT NULL AUTO_INCREMENT,
             name VARCHAR(256),
             date DATETIME,
@@ -43,11 +45,12 @@ describe('Model', () => {
         )`);
 
         const date = new Date(569985);
-        let instance: FakeDummyModel | null = new FakeDummyModel({
+        let instance: FakeDummyModel | null = factory.make({
             name: 'name1',
             date: date,
         });
 
+        console.log(instance)
         await instance.save();
         expect(instance.id).toBe(1);
         expect(instance.name).toBe('name1');